Mitsunaga, Shigeki
Hosomichi, Kazuyoshi
Okudaira, Yuko
Nakaoka, Hirofumi
Suzuki, Yasuo
Kuwana, Masataka
Sato, Shinji
Kaneko, Yuko
Homma, Yasuhiko
Oka, Akira
Shiina, Takashi
Inoko, Hidetoshi
Inoue, Ituro
Article History
Received: 3 December 2014
Revised: 14 April 2015
Accepted: 16 April 2015
First Online: 28 May 2015
Competing interests
: The authors declare no conflict of interest.